Burner.



0. Mn GRAVES.

BURNER. APPLICATION rum) MAR. 5, 1909.

ATTORNEYS m w 3 M a 0 j m& nn n .6 T w J Jr A E STA BURNER.

To all whom it may concern:

Be it known that I, (hurt M. Gimme, a citizen of the United States, anda resident of Spokane, in the county of Spokane and State of\Vashington, have invented a new and Improved Burner, of which thefollowing is a full, clear, and exact description.

This invention relates to certain improvements in burners for fluidfuel, and more particularly to a type of burner designed for the use ofa liquid fuel and which operates to vaporize the fuel and burn it in agaseous form.

One object of the invention is to so construct the vaporizing chamberthat the liquid will be compelled to travel lengthwise of the chamberand back again before going to the vaporizing nozzle of the burnerproper.

A further object of the invention is to provide certain improvements inthe con struction of the burner, whereby the draft may be cont-rolledand whereby the heat generated may be partially utilized in heating thevaporizer.

Reference is to be had to the accompanying drawings, forming a part ofthis specifi cation, in which similar characters of reference indicatecorresponding parts in all the figures, and in which-- Figure l is aperspective view of a burner mechanism constructed in accordance with myinvention, a portion of a stove being shown in section; Fig. 2 is ahorizontal section through the vaporizer, a portion of the burner properbeing broken away; and Fig. 3 is a transverse section on the line 3-3 ofFig. 2; and Fig. 4: is a detail showing the construction of the airinlet to the combustion chamber of the burner.

In the specific form illustrated in the accompanying drawings, I employa burner proper 10 and a vaporizer 11, adjacent each other and withinthe casing of the stove. The vaporizer 11 is preferably cylindrical inform, with its axis parallel to the general direction of the burner, andsupported on a slightly higher elevation. The vaporizer is provided withan inlet conduit 12 at one end thereof and an outlet conduit 18 leadingfrom the same end. Within the vaporizer is a partition 14, extendinglongitudinally thereof and connected to one end of the vaporizerintermediate the inlet and outlet of the latter and spaced a shortdistance from the opposite end of the vaporizer. The liquid is caused toenter the vaporizer Specification of Letters Patent.

Application filed March 5, 1909.

Patented May 10, 1910.

Serial No. 481,264.

through the conduit 12, travel the full length thereof at one side ofthe partition, and then return the full length of the vaporizer at theother side of the partition to the outlet 13.

The burner proper includes a casing of a length substantially equal tothe length of the vaporizer, and preferably having a flat bottom wall15, a fiat top wall 16, and inclined side walls 17 and 18. The sides ofthe burner may extend downwardly below the bottom wall 15, so as to forman air chamber 19, from which the air may pass upwardly into a mixingchamber 20 within the burner. The outlet conduit 13 from the vaporizeris connected to a nozzle 21 delivering into the mixing'chamber 20 at oneend thereof, and within this connection is a needle valve 22, wherebythe flow of the vaporized liquid to the burner may be con trolled. Theinclined side 17 of the burner lies adjacent to but spaced from the sideof the vaporizer, and is provided with a series of discharge openings23-. In the opposite inclined side 18, there are a plurality ofcorresponding openings 24:, and hinged to the outer surface of saidinclined side and below said opening is a damper plate 25, which when inoperative position, covers the last-mentioned openings and prevents theescape of the combustible gases therefrom. The damper plate is hingedalong its lower edge, so that it may be readily swung away from saidopenings to permit the burner to operate at its maximum capacity.

The bottom wall 15 of the burner is pro vided with a plurality of bosses26, through which extend passages 27, inclined toward the end of theburner opposite to the delivery nozzle 21. These passages 27 constitutethe air inlets to the mixing chamber, and their size and number willdepend upon the character of the fuel employed and the pressure andvolume at which it is delivered.

In order to heat the vaporizer to start the device in operatlon, Iprovide a trough or tray 28, extending longitudinally of the vaporizerbelow the same, and access may be gained to this tray through an openingin the wall of the stove intermediate the ends of the vaporizer andtray. The fuel is first admitted to the vaporizer and a small quantityof liquid fuel, together with a wick, if desired, are placed in the tray28 and ignited. The heat from this burning material causes the liquidfuel within the vaporizer to be converted into a vapor or gas, and uponthe opening of the needle valve, the burner may be lighted at theopenings 23 and 241- and then the operation of heating the vaporizer.will be automatically continued independently of the tray. It will benoted that the openings 23 discharge directly toward the vaporizer, sothat the latter is kept heated even though the burner be turnedcomparatively low. The flame and gases of combustion may escape from theburner slowly through the openings 23, or by opening the damper, theymay also escape through the openings 24.

Various changes may be made in the construction of my improved deviceand within the scope of the appended claims, without departing from thespirit of my invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In combination, a vaporizer having a partition extendinglongitudinally thereof and spaced from one end, an inlet and an outletfor said vaporizer at the opposite end and upon opposite sides of saidpartition, a

burner adjacent said vaporizer and having a mixing chamber provided withan air inlet, said burner having a plurality of outlet openingsextending along the length:

valve delivering to the interior of saidburner adjacent one end thereof,said burner having a series of air inlet passages through the lower wallthereof and each inclined at an angle and delivering the air toward theend of the burner opposite to said needle valve.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ORIEL MUNSON GRAVES.

lVitnesses O. A. KUoK, A. A. Moonn.

